JPH11165710A - Packaging material feed apparatus for automatic packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate continuously an automatic packaging machine for a long period of time by easily setting a packaging material rolled in a relatively large diameter and, on the other hand, prevent the occurrence of trouble such as the meandering of or the cutting of the packaging material by continuously feeding the packaging material from a winding roll side ion a fixed tension force at all times with respect to the pulling out of the packaging material by a lateral sealer. SOLUTION: A packaging material feeder TS of this packaging material feed apparatus gas, in its interior, a feed roller 1 for pulling out a packaging material FA from a winding roll F of the packaging material wound around a reel TF and feeding it to an automatic packaging machine HT, a dancer roller 2a in contact with a face of the pulled out packaging material FA and vertically rotating, an angle detector 3 for detecting a rotary angle of this dancer roller 2a, and a control unit for regulating the speed of feeding the packaging material FA faster in the case where a rotary angle of the dancer roller 2a is large and, on the contrary, regulating the feeding speed slower in the case where the rotary angle is small.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of an automatic packaging machine for automatically sealing and packaging various kinds of materials to be packaged, such as powder and liquid, using a heat sealer. The present invention relates to a packaging material feeding device for an automatic packaging machine which can smoothly feed a packaging material (packaging film) to the automatic packaging machine.

[0002]

2. Description of the Related Art A conventional general automatic wrapping machine as shown in FIG. 1 of Japanese Patent Publication No. 55-22337, for example, attaches a reel on which a wrapping material is wound to the body of the wrapping machine itself.
The seal packaging is performed while pulling out the packaging material from the reel.

Further, as in an automatic packaging machine described in, for example, Japanese Utility Model Publication No. 58-34002, the left and right horizontal sealers are moved downward by one pack while performing horizontal sealing, and the packaging material (packaging) is moved. The type of automatic wrapping machine that draws out film) has a wrapping material between the reel and the automatic wrapping machine.
A packaging material feeding machine (delivery roller) for intermittently feeding a packaging material in synchronization with the downward movement of the horizontal sealer.
Is provided to smoothly pull out the packaging material by the horizontal sealer.

[0004]

However, if the wound material is wound on a reel as described above, if the wound diameter is large, the material can be rotated very easily with a relatively small tension so that the material can be easily pulled out. However, the smaller the diameter, the higher the load and the higher the tension.Therefore, in order to pull out the packaging material wound on the reel without delay, it is necessary to pull out the packaging material. Must be set in advance in accordance with the larger tension.As a result, if the diameter of the packaging material wound on the reel is too large, the tension of the packaging material is loosened due to the inertia of the reel when the reel is pulled out. Since errors occur such as meandering and deviation in the packaging timing, there has been a problem that the amount (diameter) of the packaging material wound on the reel is naturally limited, and the amount is reduced (diameter reduction).

Further, in the case of the automatic packaging machine described in the former publication, the reel on which the packaging material is wound is directly incorporated into the body of the packaging machine itself as a part of the machine. In the case of the automatic packaging machine, the amount (diameter) of the packaging material to be wound on the reel is naturally limited and reduced to a small amount, and as a result, a new packaging material needs to be exchanged and set. There is a problem that the automatic packaging machine cannot be continuously operated for a long time because it is necessary to repeat the operation in a relatively short time.

[0006] Further, even when the automatic packaging machine is operated unattended in a clean room or the like, the replacement of the packaging material must be repeated within a relatively short period of time, which hinders the unmanned operation. there were.

Further, in the feeder of the latter type in which the packing material is intermittently fed, the take-up reel side of the packing material may not stop immediately due to inertia when the feeding roller suddenly stops. As a result, there has been a problem that the tension of the packaging material is loosened and meanders, or a problem occurs that the amount of the packaging material cannot be kept up with the withdrawal amount of the packaging material and is stretched and stretched or cut.

Accordingly, a technical problem of the present invention is to enable a continuous operation of an automatic packaging machine for a long time by easily setting a packaging material having a relatively large diameter, while preventing the packaging material from being pulled out by a horizontal sealer. Another object of the present invention is to prevent troubles such as meandering and cutting of the packaging material by continuously feeding the packaging material from the winding roll side at a constant tension.

[0009]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

In an automatic packaging machine for performing seal packaging while pulling out a packaging material wound on a reel,

(1) A vertically rotatable dancer roller elastically pressed against the surface of the packaging material fed from the reel by a feed roller, an angle detector for detecting the rotation angle of the dancer roller, When the rotation angle of the dancer roller detected by the angle detector is larger than the steady angle, the feeding speed of the packing material by the feeding roller is quickly adjusted, and when it is small, the feeding speed of the packing material is reduced. Providing a control unit for adjustment. (Claim 1)

(2) a reel on which the above packaging material is wound;
The above-mentioned automatic wrapping machine includes a feeding roller that continuously feeds the wrapping material from the reel toward an automatic wrapping machine, and a wrapping material feeding machine including a dancer roller, an angle detector, and a control unit. Provide separately. (Claim 2)

According to the means of claim 1 described in the above (1), when the packaging material is pulled out by the automatic packaging machine, the payout machine continuously draws the packaging material from the reel. There is no need to perform complicated adjustments to match the pull-out timing with the feed-out timing of the feeder, and when the amount of pull-out on the automatic packaging machine is greater than the amount of feed on the feeder and the tension of the packaging material increases, the dancer When the roller rises and adjusts the feeding speed of the feeding machine faster, on the contrary, when the feeding amount on the feeding machine side is larger than the drawing amount on the automatic packaging machine side and the tension of the packaging material decreases, the dancer roller drops. Since the feeding speed of the feeder is adjusted to be slower, the tension of the packing material is always kept constant with respect to the drawer of the automatic packing machine, thereby preventing troubles such as meandering and cutting of the packing material. Because, even if set the packaging material of a relatively large amount (large diameter) makes it possible to carry out the feeding of the packaging material without any trouble.

According to the second aspect of the present invention, the reel on which the packaging material is wound is provided on the side of the packaging material feeding machine formed separately from the automatic packaging machine. The size of the reel and the amount of packaging material to be wound on this reel can be freely selected without being reeled. It enables continuous operation and long-term unmanned operation in a clean room or the like.

As described above, the above (1),
The technical problem described above can be solved by the means described in (2), and the problem of the conventional technology can be solved.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an automatic packaging machine according to the present invention; FIG. In the figure, HT indicates an automatic wrapping machine having a general structure, and TS indicates a packaging material feeding machine made separately (separately) from the automatic wrapping machine HT.

A large reel TF is mounted on the packaging material feeding machine TS.
A winding roll F of a packaging material having a maximum diameter of, for example, φ800 mm, and a packaging material FA drawn out from the winding roll F while being rotated by a feeding motor 1M, and the extracted packaging material FA is placed in the automatic packaging machine HT. A feeding roller 1 that continuously feeds the feeding side, a rotating arm 2 that pivotally supports the root end 2b side vertically on a frame or the like of a packaging material feeding machine TS, and the like.
Dancer roller 2 attached to the tip of this rotating arm 2
a, an angle detector 3 such as a rotary encoder for detecting a vertical change in the angle of the rotating arm 2, and a final guide roller 5 for feeding the packaging material FA toward the automatic packaging machine HT.
Is provided.

The above-mentioned dancer roller 2a receives the pulling action of the pulling spring 4 attached to the rotating arm 2, and receives the upper surface of the packaging material FA passing between the above-mentioned feeding roller 1 and the final guide roller 5. And the tension is applied so that the packaging material FA assumes a substantially V-shape as shown in the figure.

The dancer roller 2a rises when the amount of the packaging material FA pulled out by the automatic packaging machine HT becomes larger than the amount of the feeding roller 1 and the tension of the packaging material FA increases. It is configured such that the amount of withdrawal of the packaging material FA on the side of the automatic packaging machine HT becomes smaller than the amount of withdrawal by the supply roller 1, and the packaging material FA descends when the tension of the packaging material FA decreases.

The rotation arm 2 (the dancer roller 2)
The position between the angle detector 3 for detecting the angle change of a) and the packaging material feeding motor 1M of the feeding roller 1 is determined based on the angle of the dancer roller 2a detected by the angle detector 3 at a steady position ( The rotation angle from the position at which the feeding roller 1 stops) is calculated. If the rotation angle is large, the rotation of the motor 1M is accelerated to adjust the feeding speed quickly. Conversely, if the rotation angle is small, the rotation of the motor 1M is adjusted. Controller (control means) for slowing down and adjusting the feeding speed
Is built in such a manner that the tension of the packaging material FA is always kept constant by adjusting the rotation of the motor 1M.

FIG. 2 is a block diagram for explaining the internal structure of the packaging material feeding machine TS in detail, wherein R1, R2, R
3 is a first, second, third guide for guiding the extracted packaging material FA.
The guide roller 1A is a drive pulley of the motor 1M described above, 1C is an interlocking pulley attached to the above-described feeding roller 1, and 1B is an interlocking belt suspended between the pulleys 1A and 1C.

In the drawings, the above-mentioned packaging material feeding machine TS is configured so as to be independent of the automatic packaging machine HT. However, it is incorporated in the automatic packaging machine HT or configured to be detachable. The selection is optional.

FIG. 3 is a block diagram for explaining the electrical configuration of the packaging material feeding device for an automatic packaging machine according to the present invention.
An interface circuit 2 connected between a PU 20 and a memory 21 composed of a ROM and a RAM via a bus 22
3, a motor 1M for feeding the packaging material, an angle detector 3 for the dancer roller 2a, a slitter SR to be described later,
The display, the keyboard, the cylinder, the motor, and the like of the automatic packaging machine HT are connected to each other, and each of them is controlled and operated according to the system program stored in the memory 21. 21
The control unit according to the second aspect controls the feeding speed of the packaging material FA.

The automatic wrapping machine HT shown in FIG. 1 is a very general one as seen in, for example, Japanese Patent Application Laid-Open No. 8-133240, etc. The block is a slitter for slitting the wide packaging material FA sent from the packaging material feeding machine TS into a plurality of belt-like films FB for a multiple automatic packaging machine. 58-5432
In the case of using a multiple automatic wrapping machine as disclosed in Japanese Patent Application Laid-Open No. 7-No. 7, this slitter SR is assembled and used integrally, but not used in the case of a normal type automatic wrapping machine HT as shown in the figure. Then, the packaging material FA fed from the packaging material feeding machine TS is directly sent to the automatic packaging machine HT.

In the drawing, 6 is a guide roller for receiving the packaging material FA or the slit packaging material FB sent from the packaging material feeding machine TS side, 7 is a drawing roller rotated by a motor 7M, and 8R is an arm. 8, a tension roller attached to the tip of 8, a forming member 11 for bending the incoming packaging material FA or FB into a state FC having a substantially U-shaped cross section,
12 is a vertical heat seal roller for vertical sealing, 13 is a horizontal heat seal roller for horizontal sealing, 10A is a vertical seal and a horizontal seal of a filling material sent from a hopper 9 through a pipe 9A and a supply device 10. A material filling pipe for filling the bag FD, a second horizontal heat seal roller 14, a cutter 15 for cutting the seal bag FE filled with the material to be packaged at the horizontal seal portion, and RK a seal product.

Since the packaging material feeding device for an automatic packaging machine according to the present invention is configured as described above, the winding roll F of the packaging material set on the reel TF of the packaging material feeding machine TS is used for the automatic packaging machine HT. The packaging material FA can be easily set by selecting a material having a large diameter without being restricted by the size. The packaging material FA is sequentially drawn from the winding roll F of the packaging material according to the rotation of the feeding roller 1. The extracted packaging material FA can be sent to the automatic packaging machine HT to continuously advance automatic packaging.

Further, the packaging material FA by the feeding roller 1 is used.
Is carried out, the angle of the dancer roller 2a is detected by the angle detector 3 (the angle of the rotating arm 2 is detected). As a result, if it is determined that the position is a steady position (steady angle), the operation is continued as it is. Power is turned off for this continuous operation
Or until the winding roll F of the packaging material feeding machine TS runs out.

On the other hand, if it is determined that the angle of the dancer roller 2a is not at the steady position, the rotation angle from the steady position is determined, and the rotation of the dancer roller 2a is determined by the rotation angle of the motor 1M. The rotation speed of the motor 1M is controlled to increase or decrease by calculating the rotation speed.
This speed-up or deceleration control of the packaging material feeding motor 1M is repeated until the dancer roller 2a returns to the normal position. As a result, the amount of the packaging material FA withdrawn by the automatic packaging machine HT and the packaging material FA with the feeding roller 1 Of the packaging material FA can be kept constant regardless of the diameter of the packaging material FA wound around the roller 1, and the tension of the packaging material FA can be kept constant. It is possible to set a large amount of packaging material on a reel.

[0029]

As described above, according to the packaging material feeding device for an automatic packaging machine according to the present invention, a larger amount of packaging material can be set on a reel than before, so that the automatic packaging machine can be operated continuously for a long time. The automatic packaging of large quantities of sealed products and the advantage of enabling unmanned operation in clean rooms, etc., while maintaining the tension of the packaging material fed from the reel side and drawn into the automatic packaging machine at a constant level. Since the packaging material does not meander or cut during the automatic packaging, automatic packaging by the automatic packaging machine can be smoothly advanced.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a packaging material feeding device for an automatic packaging machine according to the present invention.

FIG. 2 is a configuration diagram illustrating a main part of the present invention;

FIG. 3 is a block diagram illustrating an electrical configuration of the present invention.

[Explanation of symbols]

HT Automatic packaging machine TS Packaging material feeding machine TF reel F Winding roll of packaging material wound on a reel FA FAILED packaging material 1 Feeding roller 1M Feeding motor 2a Dancer roller 2 Rotating arm 3 Angle detector

Claims (2)

[Claims] 1. An automatic packaging machine for performing seal packaging while continuously pulling out a packaging material wound on a reel, wherein the up-down rotation elastically presses against the surface of the packaging material fed from a reel by a feeding roller. A movable dancer roller, an angle detector for detecting a rotation angle of the dancer roller, and a wrapping by the delivery roller when the rotation angle of the dancer roller detected by the angle detector is larger than a steady angle. A packaging material feeding device for an automatic packaging machine, comprising: a control unit for adjusting the feeding speed of the material quickly, and conversely, when the speed is small, adjusting the feeding speed of the packaging material slow. 2. A reel on which the packaging material is wound, a delivery roller for continuously delivering the packaging material to the automatic packaging machine while pulling the packaging material from the reel, and a dancer roller, an angle detector, and a control unit. 2. The packaging material feeding device for an automatic packaging machine according to claim 1, wherein a packaging material feeding machine provided with: is provided separately from the automatic packaging machine.